949
Chapter 20
Port Functions
User’s Manual U16580EE3V1UD00
20.3.15 Port
DH
Port DH is a 16-bit I/O port that can be set to input or output mode in 1-bit units. When the higher 8 bits
of port DH are used as port DHH (PDHH) and the lower 8 bits as port DHL (PDHL), port DH becomes
two 8-bit ports that can be set in the input or output mode in 1-bit units.
(1)
Functions
•
Input/output data can be specified in 1-bit units by using the port register DH (PDH).
•
Input or output mode can be set in 1-bit units by using the port mode register DH (PMDH).
•
Port mode or control mode (for alternate function) can be specified in 1-bit units by using the
port mode control register DH (PMCDH).
Table 20-18:
Alternate Function Pins and Port Types of Port DH
Note:
Alternate function not available on
μ
PD70F3447.
Caution:
On the
μ
PD70F31187, in single-chip mode 1 or in ROM-less mode, this port has exter-
nal data bus function only. Reprogramming of port DH to port mode is not possible in
these modes. Reading and writing of the port register PDH and port mode register
PMDH is possible but has no effect. Reading of the port mode control register
PMCDH is possible and the result is always FFFFH. Writing of the port mode control
register PMCDH is not possible.
Port
Alternate Function
Remark
Port Type
Port DH
PDH0
to
PDH15
D16 to D31
Note
External data bus
Note
4C
Summary of Contents for MuPD70F3187
Page 6: ...6 Preface User s Manual U16580EE3V1UD00 ...
Page 16: ...16 User s Manual U16580EE3V1UD00 ...
Page 28: ...28 User s Manual U16580EE3V1UD00 ...
Page 32: ...32 User s Manual U16580EE3V1UD00 ...
Page 84: ...84 Chapter 2 Pin Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 144: ...144 Chapter 3 CPU Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO ...
Page 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00 ...
Page 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 970: ...970 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 ...
Page 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO ...
Page 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO ...
Page 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO ...
Page 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO ...
Page 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO ...
Page 1052: ...1052 User s Manual U16580EE3V1UD00 ...
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